A useful replacement battery terminal bolt to use with ASC # 16771 Battery Terminal Clamps . With 18 threads, this bolt measures 5/16 inch x 1-1/4 inch. The bolt has a square head for easy gripping when adjusting, and a nut is included. This battery terminal bolt and nut are ideal replacement hardware pieces to use when the current nut and bolt are corroded and no longer in efficient working conditions.